参数资料
| 型号： | ATAVRBC100 |
| 厂商： | Atmel |
| 文件页数： | 4/12页 |
| 文件大小： | 0K |
| 描述： | REF DESIGN KIT BATTERY CHARGER |
| 产品培训模块： | MCU Product Line Introduction tinyAVR Introduction |
| 标准包装： | 1 |
| 系列： | AVR® |
| 主要目的： | 电源管理，电池充电器 |
| 嵌入式： | 是，MCU，8 位 |
| 已用 IC / 零件： | ATtiny261/461/861/25/45/85 |
| 主要属性： | 多化学，3 个电路，（2）1A/2.5A 时为 1.2 ~ 20V 输出，（1）5A 时为 1.2 ~ 38V |
| 次要属性： | 7.5 ~ 40V 输入，2 个继电器，支持可选 DB101 显示板 |
| 已供物品： | 板 |
| 产品目录页面： | 615 (CN2011-ZH PDF) |
| 相关产品： | ATTINY461-15MAZTR-ND - MCU AVR 4KB FLASH 15MHZ 20-QFN ATTINY861-15XZTR-ND - MCU AVR 8K FLASH 15MHZ 20-TSSOP ATTINY861-15SZTR-ND - MCU AVR 8K FLASH 15MHZ 20-SOIC ATTINY861-15MZTR-ND - MCU AVR 8K FLASH 15MHZ 32-QFN ATTINY85V-15STTR-ND - MCU AVR 8K FLASH 15MHZ 8-SOIC ATTINY85V-15MTTR-ND - MCU AVR 8K FLASH 15MHZ 20-QFN ATTINY85-15SZTR-ND - MCU AVR 8K FLASH 15MHZ 8-SOIC ATTINY85-15ST1TR-ND - MCU AVR 8K FLASH 15MHZ 8-SOIC ATTINY85-15STTR-ND - MCU AVR 8K FLASH 15MHZ 8-SOIC ATTINY85-15MZTR-ND - MCU AVR 8K FLASH 15MHZ 20-QFN 更多... |
3.2 Shunt network
A shunt resistor (70mOhm, 1%) is placed in the charge/discharge path of the battery.
The shunt resistor is used to measure the current that flows in and out of the battery.
The ATtiny devices are measuring the voltage over the shunt (differentially ADC
reading) and can use this information to calculate the current flow and adjust the
charge voltage/current accordingly, or terminate the charging.
Since the maximum voltage at the terminals of the shunt depend on the number and
type of the batteries connected, a resistor divider network is used to reduce the
voltage seen by the ATtiny. The resistor divider network can be configured to 1/2, 1/4,
1/8, 1/12 or 1/16 of the shunt terminal voltages by setting the corresponding jumpers:
One set of jumpers (J405) configure the resistor divider on the positive side of the
shunt and one set of jumpers (J406) the negative side. The side of the shunt that is
considered “positive” is positive while charging a battery. If other resistor divider
values are desired the resistors must be replaced.
The ATmega644 can also measure the shunt voltage, but only with 9 bit accuracy, as
opposed to the ATtiny, which measure with 10 bit accuracy.
Figure 3-2. The shunt resistor and configurable divider network (section of the BC100 schematics).
4
AVR451
8088A-AVR-09/07
相关PDF资料 |
PDF描述 |
|---|---|
| ATAVRDB101 | MODULE DISPLAY LCD/RGB BACKLIGHT |
| ATAVRMC100 | KIT EVALUATION FOR AT90PWM3 |
| ATAVRMC200 | KIT EVAL FOR AT90PWM3 ASYNC |
| ATAVRMC300 | BOARD EVAL LV MOTOR CONTROL PWR |
| ATAVRMC303 | BOARD EVAL MOTOR CTRL W/XMEGA |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ATAVRBFLY | 功能描述:开发板和工具包 - AVR Evaluation tool w/preloaded firmware RoHS:否 制造商:Arduino 产品:Evaluation Boards 工具用于评估:ATMega32U4 核心:AVR 接口类型:I2C, UART, USB 工作电源电压:6 V to 20 V |
| ATAVRBLE-IOT | 功能描述:SECURE AVR BLE IOT 制造商:microchip technology 系列:* 零件状态:在售 标准包装:1 |
| ATAVRCABLEKIT | 功能描述:电缆组件 AVR tools cable kit (USB+ribbon cables) RoHS:否 制造商:Molex 产品:Power Assemblies 类型:Cable Assembly 连接器端口 A:No Connector 连接器端口 A 管脚计数:4 连接器端口 B:No Connector 连接器端口 B 管脚计数: 型式:Male 线规 - 美国线规（AWG）:20, 28 长度:0.305 m 颜色:Black, Red |
| ATAVRDB101 | 功能描述:处理器配件 Display module RoHS:否 制造商:Olimex Ltd. 产品:Cable 用于: |
| ATAVRDISPLAYX | 功能描述:开发板和工具包 - AVR XMEGA Display Evaluation Kit RoHS:否 制造商:Arduino 产品:Evaluation Boards 工具用于评估:ATMega32U4 核心:AVR 接口类型:I2C, UART, USB 工作电源电压:6 V to 20 V |
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